| Mathbox for Zhi Wang |
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| Mirrors > Home > MPE Home > Th. List > Mathboxes > oppcthin | Structured version Visualization version GIF version | ||
| Description: The opposite category of a thin category is thin. (Contributed by Zhi Wang, 29-Sep-2024.) |
| Ref | Expression |
|---|---|
| oppcthin.o | ⊢ 𝑂 = (oppCat‘𝐶) |
| Ref | Expression |
|---|---|
| oppcthin | ⊢ (𝐶 ∈ ThinCat → 𝑂 ∈ ThinCat) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | oppcthin.o | . . . 4 ⊢ 𝑂 = (oppCat‘𝐶) | |
| 2 | eqid 2737 | . . . 4 ⊢ (Base‘𝐶) = (Base‘𝐶) | |
| 3 | 1, 2 | oppcbas 17653 | . . 3 ⊢ (Base‘𝐶) = (Base‘𝑂) |
| 4 | 3 | a1i 11 | . 2 ⊢ (𝐶 ∈ ThinCat → (Base‘𝐶) = (Base‘𝑂)) |
| 5 | eqidd 2738 | . 2 ⊢ (𝐶 ∈ ThinCat → (Hom ‘𝑂) = (Hom ‘𝑂)) | |
| 6 | simpl 482 | . . . 4 ⊢ ((𝐶 ∈ ThinCat ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → 𝐶 ∈ ThinCat) | |
| 7 | simprr 773 | . . . 4 ⊢ ((𝐶 ∈ ThinCat ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → 𝑦 ∈ (Base‘𝐶)) | |
| 8 | simprl 771 | . . . 4 ⊢ ((𝐶 ∈ ThinCat ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → 𝑥 ∈ (Base‘𝐶)) | |
| 9 | eqid 2737 | . . . 4 ⊢ (Hom ‘𝐶) = (Hom ‘𝐶) | |
| 10 | 6, 7, 8, 2, 9 | thincmo 49776 | . . 3 ⊢ ((𝐶 ∈ ThinCat ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → ∃*𝑓 𝑓 ∈ (𝑦(Hom ‘𝐶)𝑥)) |
| 11 | 9, 1 | oppchom 17650 | . . . . 5 ⊢ (𝑥(Hom ‘𝑂)𝑦) = (𝑦(Hom ‘𝐶)𝑥) |
| 12 | 11 | eleq2i 2829 | . . . 4 ⊢ (𝑓 ∈ (𝑥(Hom ‘𝑂)𝑦) ↔ 𝑓 ∈ (𝑦(Hom ‘𝐶)𝑥)) |
| 13 | 12 | mobii 2549 | . . 3 ⊢ (∃*𝑓 𝑓 ∈ (𝑥(Hom ‘𝑂)𝑦) ↔ ∃*𝑓 𝑓 ∈ (𝑦(Hom ‘𝐶)𝑥)) |
| 14 | 10, 13 | sylibr 234 | . 2 ⊢ ((𝐶 ∈ ThinCat ∧ (𝑥 ∈ (Base‘𝐶) ∧ 𝑦 ∈ (Base‘𝐶))) → ∃*𝑓 𝑓 ∈ (𝑥(Hom ‘𝑂)𝑦)) |
| 15 | thincc 49770 | . . 3 ⊢ (𝐶 ∈ ThinCat → 𝐶 ∈ Cat) | |
| 16 | 1 | oppccat 17657 | . . 3 ⊢ (𝐶 ∈ Cat → 𝑂 ∈ Cat) |
| 17 | 15, 16 | syl 17 | . 2 ⊢ (𝐶 ∈ ThinCat → 𝑂 ∈ Cat) |
| 18 | 4, 5, 14, 17 | isthincd 49784 | 1 ⊢ (𝐶 ∈ ThinCat → 𝑂 ∈ ThinCat) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1542 ∈ wcel 2114 ∃*wmo 2538 ‘cfv 6500 (class class class)co 7368 Basecbs 17148 Hom chom 17200 Catccat 17599 oppCatcoppc 17646 ThinCatcthinc 49765 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-rep 5226 ax-sep 5243 ax-nul 5253 ax-pow 5312 ax-pr 5379 ax-un 7690 ax-cnex 11094 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-addrcl 11099 ax-mulcl 11100 ax-mulrcl 11101 ax-mulcom 11102 ax-addass 11103 ax-mulass 11104 ax-distr 11105 ax-i2m1 11106 ax-1ne0 11107 ax-1rid 11108 ax-rnegex 11109 ax-rrecex 11110 ax-cnre 11111 ax-pre-lttri 11112 ax-pre-lttrn 11113 ax-pre-ltadd 11114 ax-pre-mulgt0 11115 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3063 df-rmo 3352 df-reu 3353 df-rab 3402 df-v 3444 df-sbc 3743 df-csb 3852 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-iun 4950 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-pred 6267 df-ord 6328 df-on 6329 df-lim 6330 df-suc 6331 df-iota 6456 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-fv 6508 df-riota 7325 df-ov 7371 df-oprab 7372 df-mpo 7373 df-om 7819 df-1st 7943 df-2nd 7944 df-tpos 8178 df-frecs 8233 df-wrecs 8264 df-recs 8313 df-rdg 8351 df-er 8645 df-en 8896 df-dom 8897 df-sdom 8898 df-pnf 11180 df-mnf 11181 df-xr 11182 df-ltxr 11183 df-le 11184 df-sub 11378 df-neg 11379 df-nn 12158 df-2 12220 df-3 12221 df-4 12222 df-5 12223 df-6 12224 df-7 12225 df-8 12226 df-9 12227 df-n0 12414 df-z 12501 df-dec 12620 df-sets 17103 df-slot 17121 df-ndx 17133 df-base 17149 df-hom 17213 df-cco 17214 df-cat 17603 df-cid 17604 df-oppc 17647 df-thinc 49766 |
| This theorem is referenced by: oduoppcciso 49914 |
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